Missing K.I. Lightsworm, cannot continue with Rhapsodies

[Ladynamine]

My only suggestion is to go into Walk of Echoes via either Grauberg [S] Veridical Conflux or (if you have Voidwatch completed) Pashhow Marshlands [S] and click on the Ornate Door as a failsafe. To my knowledge, that KI is not needed if you completed WotG and all quests required afterwards. It was only needed if you only advanced only a certain amount of WotG missions but not have access to the Veridical Conflux in Grauberg or Passhow Marshlands (Voidwatch Jeuno path fully completed) yet.

Back when I did this, I did not have WotG done and this was before they added the ???'s next to the maws to advance forward. Instead I used the Passhow Marshlands [S] entrance to Walk of Echoes because I had Jeuno Voidwatch done. Supprisingly, that worked and I was able to progress through Rhapsodies of Vana'diel.

Also if your inventory was full, you may have been unable to receive a cipher of Lilisette II. This, too, will hold up progress if you did not receive the reward. If that is the case, there is a glowing spot in the Walk of echoes opposite of the Ornate Door and Veridical Conflux...instead of going up the stairs, the path exactly opposite of those stairs leading downstairs has a glowing spot. I do not know if this spot is still blank name target or not, but it triggers you to be able to get Lilisette II and be able to continue the mission storyline.